Archeologists are at work throughout the national
park system, though an essential part of the effort is ensuring
that sites are not disturbed by visitors, thieves, erosion, or
other forces. Examples of research include finding the location
of the Sand Creek Massacre of 1864, investigating the living arrangements
on the plantation where Booker T. Washington grew up, and recording
the architectural details of ancient stone structures at Hovenweep
National Monument. Policies are spelled out in the Director's Order on Archeology.